#include "channel.hpp"

class Connection{
public:
    using ptr = std::shared_ptr<Connection>;
    Connection(const VirtualHost::ptr &host,
        const ConsumerManager::ptr &cmp,
        const Channel::ProtobufCodecPtr &codec,
        const muduo::net::TcpConnectionPtr &conn,
        const threadpool::ptr &pool):
        _conn(conn),
        _codec(codec),
        _cmp(cmp),
        _host(host),
        _pool(pool),
        _channels(std::make_shared<ChannelManager>()){}

    void openChannel(const Channel::openChannelRequestPtr &req){
        //1. 判断信道ID是否重复，创建信道
        bool ret = _channels->openChannel(req->cid(), _host, _cmp, _codec, _conn, _pool);
        if (ret == false){
            DLOG("创建信道的时候，信道ID重复了！");
            return basicResponse(false, req->rid(), req->cid());
        }
        DLOG("%s 信道创建成功", req->cid().c_str());
        //3. 给客户端进行回复
         return basicResponse(true, req->rid(), req->cid()); 
    }

    void closeChannel(const Channel::closeChannelRequestPtr &req){
        _channels->closeChannel(req->cid());
        return basicResponse(true, req->rid(), req->cid());
    }

    Channel::ptr getChannel(const std::string &cid){
        return _channels->getChannel(cid);
    }
private:
    void basicResponse(bool ok, const std::string &rid, const std::string &cid){
        mymq::basicCommonResponse resp;
        resp.set_rid(rid);
        resp.set_cid(cid);
        resp.set_ok(ok);
        _codec->send(_conn, resp);
    }
private:
    muduo::net::TcpConnectionPtr _conn;
    Channel::ProtobufCodecPtr _codec;
    ConsumerManager::ptr _cmp;
    VirtualHost::ptr _host;
    threadpool::ptr _pool;
    ChannelManager::ptr _channels;
};

class ConnectionManager{
public:
    using ptr = std::shared_ptr<ConnectionManager>;
    ConnectionManager(){}
    void newConnection(const VirtualHost::ptr &host,
        const ConsumerManager::ptr &cmp,
        const Channel::ProtobufCodecPtr &codec,
        const muduo::net::TcpConnectionPtr &conn,
        const threadpool::ptr &pool){

        std::unique_lock<std::mutex> lock(_mutex);
        auto it = _conns.find(conn);
        if (it != _conns.end()){
            return ;
        }
        auto self_conn = std::make_shared<Connection>(host, cmp, codec, conn, pool);
        _conns.insert(std::make_pair(conn, self_conn));
    }

    void delConnection(const muduo::net::TcpConnectionPtr &conn){
        std::unique_lock<std::mutex> lock(_mutex);
        _conns.erase(conn);
    }
    Connection::ptr getConnection(const muduo::net::TcpConnectionPtr &conn){
        std::unique_lock<std::mutex> lock(_mutex);
        auto it = _conns.find(conn);
        if (it == _conns.end()){
            return Connection::ptr();
        }
        return it->second;
    }
private:
    std::mutex _mutex;
    std::unordered_map<muduo::net::TcpConnectionPtr, Connection::ptr> _conns;
};